@inbook{f15a86d247294c3fbcaa92573bba715d,

title = "Star exponential functions as two-valued elements",

abstract = "We propose a relatively new notion of two-valued elements, which arise naturally in constructing star exponential functions of the quadratics in the Weyl algebra over the complex number. This notion enables us to describe group-like objects of the set of star exponential functions of quadratics in the Weyl algebra.",

author = "Y. Maeda and N. Miyazaki and H. Omori and A. Yoshioka",

year = "2005",

month = jan,

day = "1",

doi = "10.1007/0-8176-4419-9_16",

language = "English",

series = "Progress in Mathematics",

publisher = "Springer Basel",

pages = "483--492",

booktitle = "Progress in Mathematics",

}